On Wed, Oct 13 2021, Viresh Kumar <viresh.ku...@linaro.org> wrote:
> On 13-10-21, 11:26, Cornelia Huck wrote:
>> On Tue, Oct 12 2021, Viresh Kumar <viresh.ku...@linaro.org> wrote:
>> > @@ -124,13 +140,23 @@ \subsubsection{Device Operation: Operation
>> > Status}\label{sec:Device Types / I2C
>> >
>> > \drivernormative{\subsubsection}{Device Operation}{Device Types / I2C
>> > Adapter Device / Device Operation}
>> >
>> > +A driver SHOULD implement the VIRTIO_I2C_F_ZERO_LENGTH_REQUEST feature.
>>
>> Make this MUST, or maybe "MUST accept"? The central point of the feature
>> flag (at least for me) was to be able to change the semantics and format
>> without things breaking silently.
>
> Right.
>
>> I don't think we need to keep old
>> driver revisions compliant?
>
> No, we don't.
Thinking some more, we'll also probably want the driver to reject any
device that does not offer the feature. Just keep those old device/driver
revisions to themselves :)
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